<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <!-- Logo图标 -->
        <!-- <img src="../assets/heima.png" alt /> -->
        <span>后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="iscollapse ? '64px' : '200px'">
          <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff"
         :unique-opened="true" :collapse="iscollapse"
         :collapse-transition="false"
         :router="true"
         :default-active="activePath"
         >
          <!-- 一级菜单 -->
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class=" iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>


            <!-- 二级菜单 -->
            <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id"
            @click="saveNavState('/' + subItem.path)"><template slot="title">
              <!-- 图标 -->
              <i class="el-icon-menu"></i>
              <!-- 文本 -->
              <span>{{subItem.authName}}</span>
            </template></el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>
          <!-- 路由占位符 -->
          <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
    data(){
        return{
            //左侧菜单数据
            menulist:[],
            iconsObj:{
                "125":' iconfont icon-user',
                "103":'iconfont icon-tijikongjian ',
                "101":'iconfont icon-shangpin',
                "102":'iconfont icon-danju',
                "145":'iconfont icon-baobiao'
            },
            //是否折叠
            iscollapse:false,
            //被激活的链接地址
            activePath:''	
        }
    },
    created(){
        this.getMuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
  methods: {
    logout() {
      //清空token值
      window.sessionStorage.clear();
      //跳转到登录页
      this.$router.push("/login");
    },
    //获取所有的菜单
   async getMuList(){
       const {data:res} = await this.$http.get('menus')
       if(res.meta.status !==200) return this.$message.error(res.meta.msg)
        this.menulist = res.data
        console.log(res)
    },
    //点击按钮切换菜单的折叠与展开
    toggleCollapse(){
        this.iscollapse = !this.iscollapse
    },
    //保存链接的激活状态
    saveNavState(activePath){
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath = activePath
    }
  }
};
</script>
<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu{
      border-right:none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor:pointer;
}
</style>